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Method for transmitting channel quality instruction, device and system thereof

A technology of quality indication and channel transmission, applied in the direction of error prevention/detection using return channel, error prevention/detection through diversity reception, etc. It can solve the problem of no terminal sending channel quality to the base station and save CQI feedback information. Effect

Inactive Publication Date: 2010-01-06
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Currently, in the case of multi-carriers, there is no way for the terminal to send channel quality information to the base station

Method used

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  • Method for transmitting channel quality instruction, device and system thereof
  • Method for transmitting channel quality instruction, device and system thereof
  • Method for transmitting channel quality instruction, device and system thereof

Examples

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Embodiment Construction

[0028] The first embodiment of the present invention provides a method for sending CQI information, such as figure 1 shown, including:

[0029] Step 1: Determine the subset of carriers that need to feed back CQI information. The subset of carriers may consist of at least one carrier in a multi-carrier system. The terminal can perform data interaction with the base station in the determined carrier subset.

[0030] The CQI information to be fed back may include: at least one of wideband CQI (wideband CQI) information and subband CQI (subband CQI) information. Wideband CQI information may also be called average CQI (average CQI value) information, which is used to indicate the quality of the entire bandwidth channel of a certain carrier in a multi-carrier system, and is sometimes translated as general CQI. The sub-band CQI may also be called frequency-schedulable CQI (efficient schedule CQI) information, which is used to indicate the quality of a part of frequencies of a band...

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PUM

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Abstract

A method for transmitting channel quality instruction, a device and a system thereof are disclosed. The method comprises the following steps: a carrier wave subset needing feedback of CQI information is confirmed; the carrier wave subset is composed of at least one carrier wave in a multiple carrier wave system; a terminal adopts at least one carrier wave to feedback the confirmed CQI information in the carrier wave subset. Furthermore, the carrier waves in the carrier wave subset can feedback the CQI information within a preset time period. The embodiment of the invention can achieve the technical effects that the terminal sends the channel quality instruction to a base station and saves CQI feedback information in the multiple carrier wave system.

Description

technical field [0001] The present invention relates to the technical field of electronic communication, in particular to a method, device and system for sending a channel quality indication. Background technique [0002] As spectrum resources become more and more scarce, the vacant spectrum resources are often not continuous spectrum resources. In order to utilize these spectrum resources, a multi-carrier technology is proposed. A multi-carrier system can use discontinuous or continuous spectrum resources. The bandwidth of a multi-carrier system can be upgraded or expanded. The entire bandwidth can be divided into multiple carriers. For example, a 20MHZ bandwidth can be divided into four carriers. A carrier 5MHZ bandwidth. A terminal can use a certain carrier to access the network. [0003] In a multi-carrier system, when a terminal has the ability to simultaneously demodulate on all carriers in the system, the system can schedule resources for the terminal on all carrier...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/06H04L1/12H04L1/16
Inventor 莫君贤林佳李吉平刘丽娜
Owner HUAWEI TECH CO LTD
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